ずに済む (zu ni sumu)

毎日たゆまず努力すれば、私たちは後で後悔せずに済む / 後悔せずに済みます。
Mainichi tayumazu doryoku sureba, watashitachiha-go de kōkai sezu ni sumu/ kōkai sezu ni sumimasu.
If we make a persistent effort every day, we will get by without feeling regret later.

ICカードを使えば、電車に乗る前にあなたは券売機の前で並ばずに済む / 並ばずに済みます。
IC kādo o tsukaeba, denshaninoru mae ni anata wa kenbaiki no mae de narabazu ni sumu/ narabazu ni sumimasu.
If you use an IC card, you can get by without lining up in front of the ticket vending machine before you get on the train.

弟が両親と一緒に住み始めたので、両親に毎日連絡を取らないで済む / 取らないで済みます。
Otōto ga ryōshin to issho ni sumi hajimetanode, ryōshin ni mainichi renraku o toranaide sumu/ toranai de sumimasu.
Since my young brother began to live with our parents, I get by without contact parents everyday.

環境負荷の少ない暮らしをすれば、私たちは次世代に負担をかけないで済む / 負担をかけないで済みます。
Kankyō fuka no sukunai kurashi o sureba, watashitachiha jisedai ni futan o kakenaide sumu/ futan o kakenaide sumimasu.
If we live with less environmental impact, we can get by without burdening the next generation.